func TestTransportBodyReadError(t *testing.T) {  
        defer afterTest(t)  
        ts := httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) {  
                if r.URL.Path == "/ping" {  
                        return  
                }  
                buf := make([]byte, 1)  
                n, err := r.Body.Read(buf)  
                w.Header().Set("X-Body-Read", fmt.Sprintf("%v, %v", n, err))  
        }))  
        defer ts.Close()  
        tr := &Transport{}  
        defer tr.CloseIdleConnections()  
        c := &Client{Transport: tr}  
  
        res, err := c.Get(ts.URL + "/ping")  
        if err != nil {  
                t.Fatal(err)  
        }  
        res.Body.Close()  
  
        r, w := io.Pipe()  
        errClose := errors.New("some error")  
        w.CloseWithError(errClose)  
        if _, err := c.Post(ts.URL+"/test", "", r); err != nil {  
                t.Logf("Got error: %v", err)  
        }  
}